JPH0269089A - Recording device and reproducing device - Google Patents

Abstract

PURPOSE:To reduce the number of futile lines and prevent the deterioration of picture quality in the vertical direction at the time of high-speed reproduction by providing a selecting range shifting means which sets the selecting range of in-line recording samples to two kinds of ranges which are shifted by two samples from each other in accordance with the field number of digital PAL signals. CONSTITUTION:A selecting range shifting means 9 shifts the selecting range of recording samples at every field in accordance with digital PAL signals from a path 3 and sample numbers, line numbers, and field numbers from paths 6-8. A recording sample counter 72 is cleared at every field from a recording field start from a path 71 and, at the same time, outputs its count value, namely, a recording sample number to a path 11. A recording line counter 73 similarly outputs its count value, namely, a recording line number to a path 12. Then the range of recording samples is shifted in the horizontal direction by two samples and the shifting quantity in the vertical direction is reduced by the quantity.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a recording or reproducing device for digitized PAL signals, specifically a digital VTR for recording or reproducing PAL signals, at a tape speed higher than the normal playback speed. In the case of reproduction, it relates to adding a processing circuit to the recording side or reproduction side circuit so that a clear color and high-speed reproduction image can be obtained.

2. Description of the Related Art In general, a PAL signal includes a color subcarrier, and the color frame period, which is a period in units of sonoframes, is eight fields. Information that identifies each field within one color frame is called a field number. As an example, fields 1, 2)..., 8 are usually used,
For the sake of explanation, the fields below are 0.1, 7, and 7, respectively.
I will call it. FIG. 20 is a spatial representation of one frame of a PAL signal. Field number is 0.2
．． 4. Field of θ is an even field, same <1.3
．． The field No. 5.7 is an odd field, the range of lines for one field is shown as 1201123, and the range of lines corresponding to the video signal excluding field blanking is shown as 122.125. Typically range 122.125
The recording line range is 121 and 124, respectively.

Among the range of samples 126 constituting any one line in this recording line, the range of samples outside the line blanking period is indicated by 128. Usually, the range 127 including the range 128 is set as the range of in-line recording samples. All of the in-line recording samples in the recording line are treated as recording samples, and the digital VTR digitally processes and records the recording samples. Each sample within one field is given a sample number in the horizontal direction and a line number in the vertical direction. The timing of the first line number and first sample number of each field is defined as the field start. The line number including the field start, that is, the line number O, may be delayed by 312 lines or 318 lines compared to the corresponding even field for odd-numbered fields, but in the following it is assumed that it is delayed by 313 lines. Regarding recording samples, numbers are assigned to recording samples within a line and recording lines, and these will be referred to as recording sample numbers and recording line numbers, respectively.

Further, the timing of the first recording line number and the first recording sample number of each field is defined as the recording field start.

Generally, the head trajectory on the tape of a digital VTR is as shown in FIG. In the same figure, the tape 130 is indicated by the arrow 13
It runs at normal speed in the direction of 1, and the head is in the direction of arrow 133.
When traced in the direction of , a parallelogram track surrounded by the solid line in the figure is formed. If we consider a format in which one field of a video signal can be recorded on one track, each track has a field number of 0.1.2).
..., 7 fields are recorded. When the tape 130 recorded in this manner is played back, for example, in the direction of arrow 131 at eight times the normal speed, the head trace will be in the direction of arrow 133, and the parallelogram area surrounded by the dotted line will be played back. . That is, one field of image reproduced at this time is formed from samples from field O to field 7.

Next, regarding the phase of the carrier color signal of the digital PAL signal sampled at four times the color subcarrier frequency, the 22nd
This will be explained using figures. In the figure, field numbers are divided into frames, and the contents of each frame are spatially displayed according to sample numbers in the horizontal direction and line numbers in the vertical direction.

Line numbers for odd fields are shown in parentheses. The sampling axes are set at four appropriate angles that divide 360 degrees clockwise into four equal parts, and these are sequentially divided into Pl Ql R1
Let it be S. Also, the code added in front of those letters represents the burst phase that is the reference phase of each sample, and 0 is U.
+135 degrees and - correspond to -136 degrees with respect to the axis. Here, it is assumed that the digital PAL signal shown in the spatial and temporal ranges of FIG. 22 has a strong correlation with the luminance signal and the carrier color signal between each sample. In this way, the phase of the carrier color signal of the digital PAL signal changes between fields and frames.

When such a digital PAL signal is recorded and reproduced at high speed as shown in FIG.
Since it is formed from samples with different carrier color signal phases as shown in FIG. 2, there is a problem that the hue is not displayed correctly.

In order to solve this problem, the method shown in FIG. 23 has been proposed. This figure shows how the specific phase of the carrier color signal, for example +P, moves depending on the field number in Figure 22, and the carrier color signal phase changes to +P at each sample number of each line number. It is expressed as a field number. Here, the underlined portion includes all field numbers from 0 to 7 in just the right amount. If the range of recording samples in one field is vertically transitioned according to the transition of the underlined field number, as can be seen from Figures 22 and 23, recording samples with the same recording sample number and recording line number will be transported. The color signal phase is in the same phase regardless of the field number, and even if samples with different field numbers are mixed in one field during high-speed playback, the phase relationship of the carrier color signal is normal, and high-speed color playback is possible. can be realized.

Problems to be Solved by the Invention The method shown in FIG. 23 has at least two problems. One is that there are 8÷2-1=3 useless lines at the beginning and end of the recording line that cannot exist in all fields. Since these three lines must be recorded for each field, wasted space on the tape increases and the recording time for a given tape length becomes shorter. The other problem is that eight lines in the vertical direction of the image are treated as the same line during high-speed reproduction, so the image quality in the vertical direction is significantly degraded.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide an apparatus that minimizes the number of useless lines in recording lines and reduces deterioration in image quality during high-speed reproduction.

Means for Solving the Problems The present invention provides a selection method for setting the selection range of in-line recording samples among the samples constituting one line to two types of ranges with two sample transitions, depending on the field number of a digital PAL signal. This is a recording device equipped with a range transition means.

Effect of the Invention With the above-described configuration, the present invention selects the in-phase point of the conveyed color signal in the horizontal direction, so the number of unnecessary lines in the recording line is small, and the image quality deterioration in the vertical direction during high-speed reproduction is small.

Embodiment FIG. 1 is a block diagram of an embodiment of a digital PAL signal recording apparatus according to the present invention. In the figure, an analog PAL signal from a terminal 1 is input to an analog/digital conversion means (AD means) 2 and a recording video timing generation means 5. The AD means 2 samples the analog PAL signal at four times the color subcarrier frequency ESC, converts it into a digital PAL signal, and outputs it to the path 3. The recording video timing generating means 5 generates various timings from the analog PAL signal.

FIG. 5 shows a detailed block diagram of the recording video timing generating means 5. In the same figure, analog PAL from terminal 1
The signal is transmitted to the burst separation means 50 and the line synchronization separation means 5.
1. Input each to the field synchronization separation means 52, and from the analog P A J signal, burst, line synchronization,
Separate the field synchronization and route 53.54.5
5, respectively. The 4Fsc-PLL means 56 multiplies the burst from the path 53 by 4 to obtain 4Fs.
Create a sample clock for C and output it to path 4.

This sample clock is input to the AD means through path 4 in FIG. 1, and is used as a clock for each digital circuit, such as sampling a digital PAL signal. Field start generating means 57 generates a field start, which is the start timing of a field, based on the sample clock, line synchronization, and field synchronization from paths 4, 54, and 55, respectively, and outputs it to path 59.

The color subcarrier frequency Fsc of the PAL signal is Fsc=(1135÷4+1÷625)XFh with respect to the line frequency Fh,
Therefore, the sample clock 4Fsc is 4Fsc=(1
135+4÷625)XFh 6 1 line to 11
With 35 samples, every 312.5 lines/field results in a remainder of 2 samples. The number of lines in one field is alternately 313 lines and 312 lines. So set the even field to 31
If we take 3 lines and 312 lines for the odd field, the interval between the field starts from the even field to the odd field is 1135 x 313 + 2 = 355257 clocks,
The interval between field starts from an odd field to an even field is 1135×312+2=354122 clocks.

In the color frame detection means 58, the path 53.54.5
Based on the burst, line synchronization, and field synchronization from 5 to 5, a color frame start, which is the start timing of a color frame every 8 fields, is generated. The sample counter 60 counts the sample clock from the path 4 by one line, that is, 1185 clocks, and is cleared once per field by the field start from the path 59.

Line counter 61 receives 1 from sample counter 60.
The carry output for each line is counted and cleared once per field by field start from path 58. The field counter 62 counts the carry output for each field from the line counter 81 and also counts the carry output from the color frame detection means 5.
Clear once per color frame by starting color frame from 8. The count values of the sample counter 60, line counter 61, and field counter 62 are a sample number, a line number, and a field number, respectively, and are output to terminals 6, 7, and 8, respectively.

Returning to FIG. 1, the selection range transition means 9 converts the selected range of recording samples into fields using the digital PAL signal from path 3 and the sample number, line number, and field number from paths 6, 7, and 8, respectively. Transition every time. An embodiment of this selection range transition means 9 will be described next. In this embodiment, the digital signal input from the path 3 to the selection range transition means 9 is output to the path 10 without any processing. A detailed block diagram of other parts of the selection range transition means 9 is shown in FIG. Decoder 70 outputs a recording field start to path 71 based on the sample number from path 6, the line number from path 7, and the field number from path 8. The recording sample counter 72 sets the sample clock to 113.
It counts only 5 clocks, clears it once per field by starting the recording field from path 71, and outputs the recording sample number, which is the counted value, to path 11. The recording line counter 73 counts the carry output for each line from the recording sample counter 72, clears it once per field by starting the recording field from the path 71, and transfers the recording line number, which is the count value, to the path 71. Output to 12.

Here, in order to solve the problems of the conventional method shown in FIG. 23, the method shown in FIG. 8 is adopted in this embodiment. In other words, in FIG. 23, the range of recording samples to be recorded is shifted in the vertical direction, whereas in FIG. Reduce the amount of transition.

The method shown in FIG. 8 of this embodiment has at least two effects. One is that the number of unnecessary lines at the beginning and end of the recording line, which cannot exist in all fields, is 4÷2-1=1 line, which is 3 lines in the conventional method shown in Figure 23. This means that the number of lines per field is two fewer than that of the previous field.

However, since the method shown in FIG. 8 involves a two-sample transition in the horizontal direction, there is a possibility that more in-line recording samples must be taken by two wasted samples. However, the number of recording samples within a line is usually set to a value that is easily divisible to facilitate various digital signal processing. In the case of a digital PAL signal sampled at 4Fsc, the number of samples corresponding to the video signal in one line is approximately 922 samples, but the lowest value exceeding this is 9.
Conventionally, 36 samples, 944 samples, 948 samples, etc. have been adopted.

Therefore, if these conventional values are adopted, the 8th
There is no need to create unnecessary samples in the horizontal direction using the method shown in the figure. As described above, according to the method shown in FIG. 8, wasted space on the tape for two lines per field is reduced, and the recording time for a given tape length can be increased.

Another effect of the method shown in FIG. 8 is that there is little deterioration in image quality during high-speed playback. As indicated by the underline,
During high-speed reproduction, the method shown in FIG. 23 treats eight samples in the vertical direction as the same sample, but the method shown in FIG. 8 treats eight samples distributed in the horizontal and vertical directions as the same sample. Therefore, the closer these samples are to each other, the higher the correlation between the samples will be, which will improve the image quality during high-speed playback. Here, the line interval within one frame is investigated using the sample interval of 4Fsc within one line as a unit.

The number of samples corresponding to the video signal per line is approximately 9.
The number of lines corresponding to 22 samples and one frame of the video signal is approximately 576 lines. Since the aspect ratio of the video signal on the screen is 3:4, the converted value of the number of samples corresponding to one line is 922÷4X3÷578=1.2 samples/line. Next, the degree of correlation between samples is expressed by the larger of the number of samples in the horizontal direction or the number of samples in the vertical direction multiplied by the conversion value. The smaller the number, the higher the correlation. The results are larger in the vertical direction for both the method shown in Figure 23 and the method shown in Figure 8: 29.6 samples for the method shown in Figure 23 and 4.8 samples for the method shown in Figure 8. In this way, compared to the conventional method shown in Fig. 23,
The method shown in FIG. 8 of the present invention can increase the degree of correlation between samples, and therefore can reduce image quality deterioration during high-speed reproduction.

To implement the method of FIG. 8, the recording field start is transitioned horizontally and vertically according to the underlined field number. At this time, the transport color signal phase of not only samples that coincide with the recording field start but also samples that generally have the same recording sample number and the same recording line number is constant regardless of the field number. In mode 0 of FIG. 9, the recording field start timing for each field number is indicated by "0".

The values of the sample number and line number themselves at the timing of becoming "0" are just examples, and in the present invention, the spatial relative relationship of "0" as the field changes has meaning.

In this way, if the decoder 70 is configured as in mode 0 in FIG. Regardless of the number, they will be in phase.

Here, the selection range transition means 9 is constructed based on FIG. 3. In FIG. 3, the present invention is realized by changing the timing of signal control for each field.

Conversely, even if the selection range transition means 9 is configured to delay the signal for each field while leaving the timing unchanged,
It is clear that the same results as in the previous example can be obtained.

Next, the decoder 1B in FIG. 1 generates a write address for the recording memory 14 from the recording sample number from the path 11, the recording line number from the path 12, and the field number from the path 8. In this way, samples of the same phase of the carrier color signal are written to the same address in the recording memory 14, regardless of the field number.

The sample written in the recording memory 14 in this way is
Reading is performed according to the read address input from the recording channel timing generating means 17 through the path 16.

A synchronization ID adding means 18 adds a synchronization signal and an ID signal, which is an address within the color frame of this synchronization block, to the read sample for each appropriate synchronization block. This ID signal includes a field number. In the recording channel timing generation means 17, a crystal oscillator generates a master clock that determines the data rate to be recorded, and various timings created by dividing the clock are cleared by a PG multiplied signal of the rotating drum inputted from a path 20, and synchronizes the rotational phase with the recording signal. Furthermore, an ID signal is created based on the field number from the path 8 and is supplied to the synchronous ID adding means 18 through the path 18. On the other hand, the synchronization block to which the synchronization signal and ID signal are added is subjected to recording equalization and recording amplification by the recording RF means 21, and is output to the terminal 22. The signals processed by the recording system from terminal 1 to terminal 22 described above are recorded on a tape through a recording head.

Next, FIG. 2 shows a block diagram of an embodiment of a digital PAL signal reproducing apparatus according to the present invention.

In the figure, a signal reproduced from a tape recorded by the recording device through a reproduction head is inputted from a terminal 23 to a reproduction RF means 24. Here, the reproduced equalized and binary identified signal is input to the synchronization ID detection means 25 to detect a synchronization signal, establish a synchronization block, and
Detect D signal. This ID signal is input to the playback channel timing generation means 27 through the path 26, and a write address and field number for each synchronous block are generated. This reproduced field number is hereinafter referred to as a reproduced field number. In the reproduction memory 28, the synchronization block from the synchronization ID detection means 25 is written in accordance with the write address and reproduction field number from the path 29.

The reproduction memory 28 outputs the sample to the path 32 according to the read address from the path 30, and also outputs the sample to the path 32.
1, outputs the reproduction field number corresponding to the reproduced sample. FIG. 6 shows a detailed block diagram of the playback video timing generation means 46 that is used after these controls. The difference between FIG. 6 and FIG. 5 is that the terminal 47
The only difference is that the input from is a reference signal that serves as a reference for playback synchronization. Therefore, the sample number, line number, and field number of the reference signal at the terminal 47 are output to the paths 37, 38, and 39, respectively, as explained in FIG. This fee A/n! Hereafter, it will be referred to as the reference field number.

Next, one embodiment of the selection range reverse transition means 33 will be described. In this embodiment, the digital signal input from the path 32 to the selection range inverse transition means 33 is output to the path 40 without any processing. A detailed block diagram of other parts of the selection range reverse transition means 33 is shown in FIG. The difference between FIG. 4 and FIG. 3 is that the decoder 74
The inputs are the sample numbers from paths 37 and 38, respectively,
In addition to the line number, the reproduction field number from path 31 and the mode switching signal from terminal 48 are input;
Therefore, the contents of decoder 74 are different from decoder 70. Although the contents of the decoder 70 were mode O in FIG. 9, the contents of the decoder 74 were both mode O and mode 1 in the same figure. That is, switching is performed by a mode switching signal from path 48. Here, mode 1 is a high-speed playback mode that plays across the track, and mode O is a playback mode other than that, such as normal playback mode, still and slow playback mode, or when a movable head is used to play back without on-track. This is the case in the on-track special playback mode for still, slow, and high-speed playback. First, in the case of mode O, since the recorded field is reproduced in its complete form in these reproduction modes, it is necessary to restore the samples transitioned field by field by the selection range transition means 9 during recording. To do this, a recording field start is generated at the same timing as the decoder 70 during recording, and the resulting recording sample number and recording line number are sent to the second
The address may be input to the decoder 34 shown in the figure, and the same decoder 34 as the decoder 13 used during recording may give the same write address to the recording memory 14 during recording as the read address to the reproduction memory. Since the field number input to the decoder 74 at this time is the playback field number from the path 31, reverse transition is automatically performed even when the playback memory 28 is read out multiple times in succession, such as in still and slow playback modes. It will not be carried out and no inconvenience will occur. However, limited to the normal playback mode, the playback field number and the reference field number match, so even if the field number input to the decoder 74 is the reference field number, the result will not change.

In this manner, in mode 0, the selection range inverse transition means 33 performs the process of completely reverting the processing performed by the selection range transition means 9 at the time of recording.

On the other hand, in mode 1, samples from multiple fields have been written to the reproduction memory 28, and there is no need to perform a reverse transition. In this case, it is forcibly fixed to a specific field. In mode 1 of FIG. 9, the reproduction field number is fixed to field O or field 3. With the above configuration, the digital PAL signal outputted from the selection range inverse transition means 33 to the path 40 is completely free from any adverse effects caused by the processing of the selection range transition means 9 during recording when in mode O, and is in mode 1. When , the phase of the carrier color signal becomes normal within the field even though samples from multiple fields are mixed. However, in the case of mode 0 still playback, slow playback, or mode 1, the reference field number and the playback field number do not necessarily match, so it is necessary to normalize the hue using the carrier color signal inverting means 41 at the subsequent stage. Here, the selection range reverse transition means 33 is constructed based on FIG. 4. In Figure 4,
Although the timing for controlling the signal is changed for each field, even if the selection range inverse transition means 33 is configured to delay the signal for each field while leaving the timing unchanged, the same result as in the above embodiment can be obtained. The gains are clear.

Next, the digital PAL signal on the path 40 is input to the carrier color signal inverting means 41. FIG. 7 shows its detailed block diagram. In the same figure, 100 and 102 are both two-line delay means, and the signal on the path 40 is delayed by two lines.
01 signal and a signal on path 103 delayed by 4 lines. The signals on path 40 and path 103 are respectively 104.
It is multiplied by (-1/4) at 108 and input to the adder 107 . The signal on one path 101 is multiplied by (+172) by 105 and input to an adder 107. In the adder 107,
Add up the power of these three people. As can be seen from Figure 22, P
In the AL signal, the carrier color signal phases of samples two lines apart within one field differ by 180 degrees. Therefore, when a digital PAL signal is divided into a luminance signal and a carrier chrominance signal, the output of the adder 107 does not include a luminance signal that is correlated in the vertical direction, but only a luminance signal and a carrier chrominance signal that are not correlated in the vertical direction. Become. Next, only the carrier color signal is extracted by a bandpass filter 108 centered at the color subcarrier frequency FSC, and then input to an adder 112 and an inversion controller 110 through a path 109.

The subtracter 112 subtracts the carrier color signal on the path 109 from the PAL signal from the path 101 to convert the luminance signal to the path 11.
Output to 3. On the other hand, in the inversion controller 110, the path 109
The carrier color signal is output to path 111 either as is or with its phase inverted by 180 degrees, depending on the inversion control signal from path 115. Finally, in adder 114, path 1
The luminance signal of 13 and the carrier color signal of path 111 are added to form a digital PAL signal, which is output to path 42.

In this manner, in the carrier color signal inverting means 41, only the phase of the carrier color signal of the digital PAL signal on the path 40 is inverted or not in accordance with the inversion control signal from the path 115. This inverted control signal is generated by a decoder 116. Decoder 116 receives sample numbers, line numbers, reference field numbers from paths 37, 38, and 39, respectively, and reproduction field numbers from path 31 and path 4.
The mode switching signal from 8 is input.

Here, in FIG. 22, the sampling axes P1Q1R,
45 degrees, -45 degrees, -135 degrees, respectively, with respect to S.
The phase relationship of the carrier color signal will be examined when the angle is set at 135 degrees and the burst phase is left as is. FIG. 10 shows the carrier color signal of each sample at that time divided into a U-axis component and a V-axis component, and the codes of these components are arranged in order. For example, in field 0, line m1 sample (n-1), it is -0, but the actual value of the carrier color signal at this time is -TJ cos45° + V 5ln45, assuming the color difference signal is (U, V). It is ゜.

Next, in FIG. 10, the method of processing the carrier color signal phase of each sample when the reproduction field number is 0 and the reference field number changes from O to 7 is shown in the 11th section.
As shown in the figure. In the figure, the underline indicates that the playback field number is O. The line correspondence between the even and odd fields is such that line m of the even field is delayed by 312 lines, such as line (m-1) of the odd field. The value of each term is an inversion control signal, where 0 corresponds to no inversion and 1 corresponds to inversion. Similarly, the reproduction field number is 1.2.3.4.5.
6.7, respectively, 12.13.14.15
．． It will look like Figure 1B, 17.18. FIG. 19 summarizes these relationships. The figure shows whether the burst phases are the same or different for the reproduced signal and the reference signal, and whether the angular difference between the sampling axes is 0 degrees, -90 degrees, or -180 degrees.
degree, -270 degrees, and for those with different burst phases, whether the sampling axis of the reproduced signal falls into the group of 135 degrees or -45 degrees.
Or, it is divided into 45 degree and -135 degree groups, and an inversion control signal is obtained for each.

As described above, the decoder 116 shown in FIG. 7 realizes the contents shown in FIGS. 11 to 18. In this way, whether it is high-speed playback across tracks in mode 1, still or slow playback in mode 0, or high-speed on-track playback using a movable head, all playback signals are digital PAL signals that follow the reference signal. Convert to
Color images can be reproduced.

The digital PAL signal thus outputted to the path 42 in FIG. 2 is converted into an analog PAL signal by the DA means 43 and outputted to the terminal 44.

DETAILED DESCRIPTION OF THE INVENTION As described in detail, according to the present invention, the wasted space on the tape for two lines per field is reduced, and the recording time for a given tape length can be increased. In addition, since it is possible to obtain a high degree of correlation between samples,
Image quality deterioration during high-speed playback can be reduced, and clear high-speed playback images can be realized.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an embodiment of a digital PAL signal recording device of the present invention, FIG. 2 is a block diagram of an embodiment of a digital PAL signal reproducing device of the present invention, and FIG. 3 is a selection range transition means. FIG. 4 is a detailed block diagram of an embodiment of the selection range reverse transition means, FIG. 5 is a detailed block diagram of the recording video timing generation means, and FIG. 6 is a detailed block diagram of the recording video timing generation means. FIG. 7 is a detailed block diagram of the timing generating means, FIG. 7 is a detailed block diagram of the carrier color signal inverting means, FIG. 8 is an explanatory diagram showing the operation of the present invention, and FIG. 9 is the decoder of FIGS. 3 and 4. Fig. 10 is an explanatory drawing of the phase of the carrier color signal, Fig. 11, Fig. 12, Fig. 13, Fig. 14, Fig. 15, Fig. 16, Fig. 17, Fig. 18. is an explanatory diagram of the contents of the decoder in FIG. 7, FIG. 19 is an explanatory diagram summarizing the operation of the decoder in FIG. 7, and FIG. 20 is an explanatory diagram of terms related to video signals.
Figure 21 is an explanatory diagram of high-speed playback across tracks;
The figure is an explanatory diagram of the sampling axis, and FIG. 23 is an explanatory diagram showing the operation of the conventional example. 5... Recording video timing generation means, 9...
Selection range transition means, 33...Selection range transition means, 4
1... Carrier color signal inversion means, 46... Playback video timing generation means. Name of agent: Patent attorney Shigetaka Awano and one other person

Claims (5)

[Claims] (1) A digital PAL signal sampled at four times the color subcarrier frequency is input, a recording line includes at least a part of a line constituting any one field of the digital PAL signal, and any part of the recording line is The in-line recording samples include at least a part of the samples constituting one line of the recording line, the in-line recording samples of all the lines in the recording line are used as recording samples, and the recording samples are digitally processed and recorded. The recording device sets a selection range of the in-line recording samples among the samples constituting the one line to two types of ranges in which two samples transition, according to a field number of the digital PAL signal. A recording device comprising a transition means. (2) A device for reproducing a medium recorded by the recording device according to claim 1, wherein the reproduced digital PA
Reproduction characterized by comprising a selection range inverse transition means for returning the sample transitioned by the selection range transition means to the same state as the input of the selection range transition means, depending on the field number of the L signal or the reference signal. Device. (3) An apparatus for reproducing a medium recorded by the recording apparatus according to claim 1, wherein the sample transitioned by the selection range transition means is transferred to the selection range inverse transition means for returning the state to the same state as the input of the selection range transition means, and separating the digital PAL signal into a luminance signal and a carrier color signal and converting the phase of the carrier color signal to the field number of the reproduced signal and the sample of the reference signal. 1. A reproducing device comprising a carrier color signal inverting means that performs normal inversion depending on a number, a line number, and a field number. (4) An apparatus for reproducing a medium recorded by the recording apparatus according to claim 1, wherein the sample transitioned by the selection range transition means is transferred to the A selection range inverse transition means is provided for returning the selection range to the same state as the input of the selection range transition means, and the selection range is changed to the state of a specific field number regardless of the field number of the playback signal during a high-speed playback mode in which tracks are played back across the track. A playback device characterized in that a range reverse transition means is set. (5) An apparatus for reproducing a medium recorded by the recording apparatus according to claim 1, wherein the sample transitioned by the selection range transition means is transferred to the selection range inverse transition means for returning the state to the same state as the input of the selection range transition means, and separating the digital PAL signal into a luminance signal and a carrier color signal and converting the phase of the carrier color signal to the field number of the reproduced signal and the sample of the reference signal. Equipped with carrier color signal inversion means that reverses the color signal in the forward direction depending on the number, line number, and field number, and in high-speed playback mode that plays across the track,
A reproducing apparatus characterized in that the selected range inverse transition means is set to a state of a specific field number without depending on a field number of a reproduced signal.